THIS SENSOR TRACKS WHO DRIVES IN YOUR NEIGHBOURHOOD!

The Flock's Sensor is a start-up that lets residents monitor who drives in and out of their neighbourhood. The sensor was revealed at Silicon Valley during an event on Monday. 

The Flock Sensor; which is offered for $50 a year per house, logs all the number plates of every car that drives through the streets, the sensor could eventually provide facial recognition. 

Residents of monitored neighbourhoods can opt-out of being tracked – but visitors or people passing through cannot.

Flock is backed by Y Combinator, a start-up “incubator” which in the past has funded successes including Dropbox, Reddit and Airbnb. A privacy expert said he believed the data collection to be legal according to US law, but that the idea could ignite a debate about the "right to be left alone in public”.

The data that is captured by these sensors are only made available to "neighbourhood leaders" and is a tool that could be used to fight crime. 

The technology was shown off at Y Combinator’s Demo Day, the twice-yearly event at which entrepreneurs pitch their companies to several hundred investors.Flock’s devices are being trialled in seven neighbourhoods in and around Atlanta, with more locations across the US currently being considered.

Geekerhertz will keep you posted as Flock's sensors get updates.